Franklin de forest loomis



P. DE P'. Looms.

HOISTING. MACHINE. y 1\I0.1.13,62sV Patented oct. z2, 1889.

N. PETERS. Phamljmgnplmr, Washingan. D. C.

UNITED. STATES PATENT OFFICE.

FRANKLINDE FOREST LOOMIS, OF BROOKLYN, NEW YORK, ASSIGNOR TO THOMAS F. KRAJEWSKI AND JAMES L. COOHRANE, OF SAME PLACE, AND -ALFONSO PESANT, OF HAVANA. CUBA.

MACHINE.

SPECIFICATION forming part of Letters Patent No. 413,623, dated October 22, 1889.

Applicatie ined December 10, 1887.

To al@ whom t may concern:

Be 1t known that I, FRANKLIN DE FOREST LOOMIS, of Brooklyn, Kings county, and State a gear-wheel e.

of New York, have invented a 4certain new and useful f Improvement in Hoisting Machines, of which the following is a specifica tion. Y

My improvement relates more particularly to hoisting-machines in which a steam-engine is combined `with a hoisting apparatus, the Whole being mounted upon a carriage supported upon wheels, whereby it may be moved from place to place.

' I Will describe in detail ahoisting-machine embodying my improvement, and then point out the novel features inl a claim.

y `In the accompanying drawings, Figure l i a side elevatioir of a hoisting-machine elnbodying my improvement,'looking in the direction of the arrow, Fig. 2, certain parts being shown in section. Fig. 2 is a front elevation of the same. Fig. 3 is a vertical section taken on the plane of the dotted line Fig. 2. Fig. 4 is a detail, on an enlarged scale, showing a certain collar employed in conj unction with an eccentric used in the machine.

A designates the main frame of the machine. It is, as shown, composed of I-beams and is rectangular in shape. Upon this framework is supported a steam-engine B, which may be of the usual or any desired construction.

O designates a steam-cylinder, operating a piston-rod ct in the usual manner. A crosshead c of ordinary construction is secured to the piston-rod. y v

D designates a pitman-rod pivotally connected to the piston-rod a, and also to a crankwrist on a crank F, keyed upon a crank-shaftI G,lmounted in suitable bearings upon the frame. (Not shown.) The crank -shaft G bears outside the frame of the machine a flywheel f. Rigidly mounted on the shaft G is This gear-wheel meshes with the gear-wheel d, rigidly secured to one end of a drum E, mounted in suitable bearings upon the frame A of the machine, but not shown in the drawings. Motion is thus transmitted from the crank-shaft G to the drum E.

Vally in any desired direction.

VScrial'llo. 257,523. (No model.)

H designates an eccentric mounted on the 5o crankshaft G.

This eccentric operates the steam-valve by means of an eccentric-rod 7b in the usual manner. A collar@l surrounds and is rigidly secured to the crank-shaft G adjacent to the eccentric H. collar is shown more clearly in Fig. 4. It comprises an arc-shaped slot 7i. Through this slot extends a bolt h2, which bolt is adapted to engage a screw-threaded aperture in the side of the eccentric H. By loosening the 6o bolt h2 and rotating the eccentric within its strapits position may be varied so that a reverse rotation of the crank-shaft will be occasioned.

J designates an intermediate shaft jour- 65 naled in suitable bearings in the frame A of the machine. Upon this shaft is mounted a gear-wheel J This gear-wheel may be slid freely to and fro on the shaft J.

Whenv the machine is to remain stationary 7o in one place, the gear-wheel J is moved along upon the shaft- J into such position that it will not engage with the gear-wheel d. When, on the contrary, it is desired to move the maf chine from place to place, the gear-Wheel J 75 is shifted into such position that it Will gear with the gear-wheel (Z. It will then also gear with a gear-wheel J 2, rigidly mounted upon au axle l, journaled in bearings ou the frame A of the machine. This axle bears near its 8o outer ends two wheels I I. The wheel I is loose upon the axle l. The wheel I is, on the contrary, rigidly secured to said axle. The wheel I constitutes a driVing-wheelfor propelling the machine from place to place. I have shown'it as provided upon its periphery with spur-teeth for facilitating its engagement with any surface upon which it may rest. f

L designates caster-wheels supported in 9o brackets j, extending downwardly from the frame A of the machine. I have shown two of these caster-Wheels; but I may use but one, if desired: They may of course turn pivot- It will be readily understood that the entire machine is supported upon the wheels I, I aJIldL. Y

The face of this 5 5 When, as stated, it is desired to move the machine from place to place and the gearwheel .Tf has been moved into a position to gear with the gear-wheels d and J 2, the steamengine is started, and according to the position of the eccentric on the crank-shaft the machine will be moved forward or backward, because lthe gear-wheel J will cause the rotation of the axlel and the driving-wheel I. If it is desired to move it forward or backward in a substantially straight course, the machine is guided in such course by the caster-wheels L. If, on the contrary, it is desired to turn round in either direction, such movement will be readily and quickly accomplished by the drive-wheel I, as that wheel alone is rigid upon the axle l, and therefore alone operates to move the machine. The wheel I in this instance is an idlerand operates merely as a center of motion for the machine.

Instead of securing the gear-wheel J rigidly upon the axle Z, it may be secured rigidly to the driving-wheel I, in which case the driving-Wheel can be free to turn upon the axle.

What I claim as my invention, and desire to secure by Letters Patent, is-

The combination, with an engine and a frame upon which said engine is mounted, of an axle journaled in said frame, a drivingwheel rigidly mounted on said axle, a wheel loosely mounted on said axle, a crank-shaft having a pitman-connection with the engine, a gear-wheel on the crank-shaft, a gear-Wheel on the axle, and an intermediate shaft having an endwise-movable gear-wheel thercon,sub stantia'lly as specified.

FRANK LIN DE FOREST' LOOMIS.

. Witnesses:

W. A. RABAU, JENNIE GREER. 

